class AddPositionState < ActiveRecord::Migration
  	def self.up
  		add_column 	:positions, :rook_a_moved, :integer
  		add_column 	:positions, :rook_h_moved, :integer
  		add_column 	:positions, :king_moved, :integer
  	end

  	def self.down
  		remove_column :positions, :rook_a_moved
  		remove_column :positions, :rook_h_moved
  		remove_column :positions, :king_moved
  	end
end
